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Magnetic Methods

Quiz on Magnetic Methods

 

You have to face 10 multiple-choice questions each carrying 1 mark. Each question has only one correct answer out of 4 options. Answering all the questions is not mandatory. The quiz will be auto submitted after the timer stops.

 

Total no. of questions: 10
Full marks: 10
Time: 10 Minutes

 

1 / 10

The lines connecting points of zero magnetic dip on a magnetic map is known as

2 / 10

What is the term for the deviation between true north and magnetic north?

3 / 10

Which of the following materials is not commonly used in the construction of a magnetometer?

4 / 10

The region where the Earth’s magnetic field interacts with the solar wind is known as the:

5 / 10

Which type of rocks are commonly used in paleomagnetic studies due to their ability to preserve ancient magnetic information?

6 / 10

What term describes the process by which rocks acquire a permanent magnetization aligned with Earth’s magnetic field at the time of their formation?

7 / 10

What term describes the alignment of magnetic minerals in rocks with the Earth’s magnetic field at the time of their formation?

8 / 10

What is the term for a line on a magnetic map that connects points of equal magnetic declination?

9 / 10

The study of the behaviour and effects of magnetic fields in the Earth’s upper atmosphere is known as:

10 / 10

What is Palaeomagnetism?

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Advanced Quiz on Magnetic Methods

 

You have to face 10 multiple-choice questions each carrying 1 mark. Each question has only one correct answer out of 4 options. Answering all the questions is not mandatory. The quiz will be auto submitted after the timer stops.

 

Total no. of questions: 10
Full marks: 10
Time: 10 Minutes

 

1 / 10

What is the significance of magnetic declination in magnetic surveys?

2 / 10

How do scientists use paleo magnetism to study the past behaviour of the Earth’s magnetic field?

3 / 10

How does palaeomagnetism contribute to our understanding of plate tectonics?

4 / 10

What is the primary purpose of magnetic methods in geophysics?

5 / 10

How can magnetic methods help in identifying fault zones?

6 / 10

What is the role of a base station in a magnetic survey?

7 / 10

How can magnetic methods be used to study ancient human activities?

8 / 10

What is the primary advantage of using magnetic surveys in unexplored regions?

9 / 10

What is the primary advantage of using a fluxgate magnetometer in magnetic surveys?

10 / 10

Which phenomenon occurs when the magnetic minerals in a rock align with the current magnetic field upon cooling below the Curie temperature?

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Introduction

Magnetic methods are geophysical techniques used to study variations in the Earth’s magnetic field caused by the magnetic properties of rocks and minerals. These methods help scientists locate valuable mineral deposits, map geological structures, and study archaeological sites. Using instruments called magnetometers, magnetic surveys measure anomalies in the magnetic field, which indicate the presence of different rock types or buried objects. Non-invasive and efficient, magnetic methods are widely used in mineral exploration, environmental investigations, and even in detecting underground utilities. They provide critical insights into the Earth’s subsurface, helping us unlock its hidden features and resources.

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